diff options
| author | Alexei Starovoitov <ast@fb.com> | 2017-05-30 13:31:27 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-31 19:29:47 -0400 |
| commit | 71189fa9b092ef125ee741eccb2f5fa916798afd (patch) | |
| tree | 6a2f3dd82c3332011d215d85d9b56d38502e8864 /arch | |
| parent | d2e0ef493ad953048bdf562b06cc4330b3fd9fb7 (diff) | |
| download | linux-71189fa9b092ef125ee741eccb2f5fa916798afd.tar.bz2 | |
bpf: free up BPF_JMP | BPF_CALL | BPF_X opcode
free up BPF_JMP | BPF_CALL | BPF_X opcode to be used by actual
indirect call by register and use kernel internal opcode to
mark call instruction into bpf_tail_call() helper.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/net/bpf_jit_comp.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp64.c | 2 | ||||
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 2 | ||||
| -rw-r--r-- | arch/sparc/net/bpf_jit_comp_64.c | 2 | ||||
| -rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 2 |
5 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm64/net/bpf_jit_comp.c b/arch/arm64/net/bpf_jit_comp.c index 71f930501ade..b1d38eeb24f6 100644 --- a/arch/arm64/net/bpf_jit_comp.c +++ b/arch/arm64/net/bpf_jit_comp.c @@ -586,7 +586,7 @@ emit_cond_jmp: break; } /* tail call */ - case BPF_JMP | BPF_CALL | BPF_X: + case BPF_JMP | BPF_TAIL_CALL: if (emit_bpf_tail_call(ctx)) return -EFAULT; break; diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c index aee2bb817ac6..a01366584a4b 100644 --- a/arch/powerpc/net/bpf_jit_comp64.c +++ b/arch/powerpc/net/bpf_jit_comp64.c @@ -938,7 +938,7 @@ common_load: /* * Tail call */ - case BPF_JMP | BPF_CALL | BPF_X: + case BPF_JMP | BPF_TAIL_CALL: ctx->seen |= SEEN_TAILCALL; bpf_jit_emit_tail_call(image, ctx, addrs[i + 1]); break; diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 6e97a2e3fd8d..42ad3832586c 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -991,7 +991,7 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i } break; } - case BPF_JMP | BPF_CALL | BPF_X: + case BPF_JMP | BPF_TAIL_CALL: /* * Implicit input: * B1: pointer to ctx diff --git a/arch/sparc/net/bpf_jit_comp_64.c b/arch/sparc/net/bpf_jit_comp_64.c index 21de77419f48..4a52d34facf9 100644 --- a/arch/sparc/net/bpf_jit_comp_64.c +++ b/arch/sparc/net/bpf_jit_comp_64.c @@ -1217,7 +1217,7 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx) } /* tail call */ - case BPF_JMP | BPF_CALL |BPF_X: + case BPF_JMP | BPF_TAIL_CALL: emit_tail_call(ctx); break; diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index f58939393eef..fec12eaa0dec 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -877,7 +877,7 @@ xadd: if (is_imm8(insn->off)) } break; - case BPF_JMP | BPF_CALL | BPF_X: + case BPF_JMP | BPF_TAIL_CALL: emit_bpf_tail_call(&prog); break; |